Guelder rose
A native hedgerow viburnum with a clever flower head: a ring of large showy sterile flowers around the outside advertising for insects, and a mass of small fertile ones in the middle doing the actual work. The sterile ring is pure signalling, and the wild plant is a far better bee plant than the garden snowball form, which has converted every flower to the sterile kind.
Value to bees
- Nectar
- High
- Pollen
- Moderate
- As a honey crop
- Feeds the colony but rarely yields a surplus
- Which bees, and why
- Worked by small solitary bees, hoverflies and beetles as much as by honey bees. The flat head of tiny open florets is a landing platform, and the sterile ring exists solely to make it visible from a distance.
Tiny fully open fertile florets with exposed nectar — accessible to the smallest insects.
- Worth knowing
- Good accessible nectar in early summer, and a useful lesson in reading a flower — most of what you can see is advertising rather than reward.
Flowering
- In flower
- May to July (northern hemisphere)
Four to six weeks in early summer, after the hawthorn.
- When nectar flows
- Good nectar from the small fertile central florets, freely accessible. The showy outer ring produces nothing at all.
- Year-to-year variation
- Reliable and modest.
Growing it
- Conditions
- Sun or part shade, moist soil. It prefers damp ground and tolerates heavy clay.
- Size
- 2-4 m.
- Native range
- Europe, North Africa and central Asia, in damp woodland and hedgerow.
- Suits
- Hedgerow, Large gardens, Small gardens
- Plant the wild species, not the 'Roseum' snowball form — that cultivar is entirely sterile flowers and offers nothing to any insect.
- Excellent native hedgerow shrub with spring flowers, autumn colour and winter berries.
- The berries persist into winter because birds take them late, which makes it useful in hard weather.
What it looks like
A spreading shrub with three-lobed maple-like leaves and flat white flower heads ringed by large sterile florets, followed by translucent red berries and good autumn colour.
Sources
- Field Guide to the Bees of Great Britain and Ireland — Bloomsbury (2015) · Field guide
- HoneyHQ editorial synthesis — HEKNO Ltd · HoneyHQ synthesis
How sources are selected and weighted is set out in the sources and evidence policy.
Guides covering this plant
Tools for planning planting
- Flowering calendar
What should I plant so that something is always in flower for bees?
- Bee-friendly garden planner
What should I plant in the space I actually have?
- Plant recommendation tool
Which plant fills this specific gap?